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GATE2015-1-4

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The value of $\displaystyle{} \lim_{x\rightarrow 0}\dfrac{1- \cos(x^2)}{2x^4}$ is

  1. $0 \\$
  2. $\dfrac{1}{2} \\$
  3. $\dfrac{1}{4} \\$
  4. undefined

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